Product Category page multiple checkboxlist selection

Hi im building site for the category page, where left side of the page will be
brand, Type, Capacity, Discount (All this are separate  <asp:CheckBoxList> controls
and right side of the page, ListView1 control will be there
based on the Checkboxlist selection, the listview1 data will change

1. Any idea how to create the below url based on the checkbox selection list  OnSelectedIndexChanged
appliances-air-conditioners/?sort=plrty&#plrty|Brand:Blue Star^ Hitachi|Type_s:Cassette^ Window|Capacity_s:1-1.5 Ton^ 2 Ton and above^ Below 1 Ton|discount:0 - 10|
2.How can I remove ^ and Query this to the listview from the product table during onselectedindexchanged
3.fyi the Listview will be in the UpdatePanel